JP5203759B2 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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JP5203759B2
JP5203759B2 JP2008072426A JP2008072426A JP5203759B2 JP 5203759 B2 JP5203759 B2 JP 5203759B2 JP 2008072426 A JP2008072426 A JP 2008072426A JP 2008072426 A JP2008072426 A JP 2008072426A JP 5203759 B2 JP5203759 B2 JP 5203759B2
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casing
tank
inlet
outlet
core
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JP2009228930A (en
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誠 和田
小野　　純
正敏 野崎
謙 柳川
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T.RAD CO., L T D.
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T.RAD CO., L T D.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section

Description

本発明は、排気ガスを冷却するＥＧＲクーラ（排気ガス再循環装置用冷却器）等の高温ガスを冷却する熱交換器に最適なものであって、一対の出入口パイプをコアの一方端部に配置することができるものに関する。   The present invention is most suitable for a heat exchanger that cools high-temperature gas such as an EGR cooler (cooler for exhaust gas recirculation device) that cools exhaust gas, and a pair of inlet / outlet pipes are provided at one end of a core. It relates to what can be arranged.

バイパスを有する排気ガス用熱交換器として、下記特許文献記載のものが提案されている。これはシェルアンドチューブ型の熱交換器コアの一端にバイパス弁を有する出入口タンクを設け、コアの他端と出入口タンクの出口側とをリターンパイプで接続したものである。そして、排気ガスが比較的低温の際にはバイパス弁を開放し、出入口タンクの入口から出口に排気ガスをバイパスさせる構造のものである。
他のバイパス付ＥＧＲクーラとして、コアの中央位置に仕切板を配置し、排気ガスをコア内にＵ字状に流通させると共に、それとは別個にバイパス路を設けたものが提案されている。 As an exhaust gas heat exchanger having a bypass, one described in the following patent document has been proposed. In this case, an inlet / outlet tank having a bypass valve is provided at one end of a shell-and-tube type heat exchanger core, and the other end of the core and the outlet side of the inlet / outlet tank are connected by a return pipe. When the exhaust gas is at a relatively low temperature, the bypass valve is opened, and the exhaust gas is bypassed from the inlet to the outlet of the inlet / outlet tank.
As another EGR cooler with bypass, a partition plate is arranged at the center position of the core, and exhaust gas is circulated in the U shape in the core, and a bypass path is provided separately from the UGR.

特開２００７−９７２４号公報Japanese Patent Laid-Open No. 2007-9724 特開２００７−１３２３１０号公報JP 2007-132310 A

前者のＥＧＲクーラは別個にリターンパイプを必要とし、部品点数が多く組立て工数を多くなる欠点があった。また、後者のＥＧＲクーラはコア中央に仕切りを設け、その仕切りの両側に多数の伝熱管を配置するため、より多くの伝熱管を必要とし、これも部品点数を多く必要とし、組立に多くの時間を要する欠点があった。その結果、それぞれ製造コストが高くなる欠点があった。
そこで、本発明はコアの一方端部に一対の出入口パイプを配置できる部品点数が少なく、組立性がよい熱交換器を提供することを課題とする。 The former EGR cooler requires a separate return pipe, and has the disadvantage of increasing the number of parts and assembly man-hours. In addition, the latter EGR cooler is provided with a partition in the center of the core, and a large number of heat transfer tubes are arranged on both sides of the partition. Therefore, more heat transfer tubes are required, which also requires a large number of parts and requires a lot of assembly. There was a drawback that took time. As a result, there has been a drawback that the manufacturing cost is increased.
Therefore, an object of the present invention is to provide a heat exchanger that has a small number of parts in which a pair of inlet / outlet pipes can be arranged at one end of a core and has good assembly.

請求項１に記載の本発明は、横断面門形に形成されて、その門形の立ち上がりの側面の長手方向の両端部のみに一対の冷却水タンク(1)が、その側面の全高さに渡って、その外面側へ、一体に突設された細長いケーシング本体(2)および、そのケーシング本体(2)の高さ方向の開口が、その開口に整合する形状を有する幅方向両縁の立ち上げ縁(3a)に嵌着されて閉塞されるケーシング底蓋(3)を有するケーシング(4)と、
そのケーシング(4)に内装され、その幅が、前記水タンク(1)を除く、ケーシング(4)の内幅に整合し、それぞれの内部に被冷却媒体が流通すると共に、外周に冷却水が流通する複数の偏平なチューブ(5)の積層体よりなるコア(6)と、
前記ケーシング(4)内で、前記コア(6)に隣接して、そのコア(6)と前記ケーシング底蓋(3)との間に戻りダクト(7)を形成する仕切プレート(8)と、
前記ケーシング(4)の長手方向の一端部に設けられ、前記コア(6)の出口端と前記戻りダクト(7)の入口端とを一体に被蔽して両者を連通する戻りタンク(9)と、
前記ケーシング(4)の長手方向他端部に設けられ、前記コア(6)の入口端と前記戻りダクト(7)の出口端とを一体に被蔽して両者を連通し、コア(6)側に被冷却媒体の入口(10)が設けられ、戻りダクト側にその出口(11)が設けられた出入口タンク(12)と、
その出入口タンク(12)内に設けられ、被冷却媒体をその入口(10)と出口(11)の間を固定的に閉塞するタンク内仕切部(12a)または、それらの間を開閉自在に閉塞するバイパス弁(13)と、を具備し、
前記偏平なチューブ(5)は、その長手方向両端部が高さ方向に拡開されて矩形に形成され、隣接するチューブ(5)の各拡開部(5c)が互いに接触固定され、その拡開部(5c)を除き、隣接チューブ(5)間に冷却水路(19)が形成され、
前記仕切プレート(8)は横断面門形に形成され、その幅が前記偏平なチューブ(5)に整合し、その高さ方向の開口縁が前記ケーシング底蓋(3)に着座されて、前記冷却水タンク(1)との対向面間に、そのタンク(1)の突出分の隙間が形成され、その隙間はチューブ(5)とタンク(1)の隙間と同一に形成され、その仕切プレート(8)の長手方向両端縁部に、高さ方向に拡開部(8a)が形成され、その拡開部(8a)が隣接するチューブ(5)の拡開部(5c)に接触固定されて、それらの間に冷却水路(19)が形成された熱交換器である。 The present invention according to claim 1 is formed in a gate shape in cross section, and a pair of cooling water tanks (1) are provided at only the longitudinal ends of the side surface of the rising side of the gate shape at the total height of the side surface. The elongated casing body (2) integrally projecting to the outer surface side, and the opening in the height direction of the casing body (2) are standing on both edges in the width direction having a shape matching the opening. A casing (4) having a casing bottom lid (3) fitted and closed to the raised edge (3a);
Inside the casing (4) , the width thereof matches the inner width of the casing (4) excluding the water tank (1), the medium to be cooled circulates inside each, and the cooling water flows around the outer periphery. A core (6) composed of a laminate of a plurality of flat tubes (5) in circulation;
In the casing (4), adjacent to the core (6), a partition plate (8) forming a return duct (7) between the core (6) and the casing bottom lid (3),
A return tank (9) provided at one end in the longitudinal direction of the casing (4) and integrally covering the outlet end of the core (6) and the inlet end of the return duct (7) When,
Provided at the other end in the longitudinal direction of the casing (4), and integrally covers the inlet end of the core (6) and the outlet end of the return duct (7), the core (6) An inlet / outlet tank (12) provided with an inlet (10) for the medium to be cooled on the side and an outlet (11) on the return duct side;
A tank internal partition (12a) that is provided in the inlet / outlet tank (12) and fixedly closes the medium to be cooled between the inlet (10) and the outlet (11), or between them is freely opened and closed. A bypass valve (13) ,
The flat tube (5) is formed in a rectangular shape with its longitudinal end portions widened in the height direction, and the widened portions (5c) of the adjacent tubes (5) are fixed in contact with each other. Except for the opening (5c), a cooling water channel (19) is formed between adjacent tubes (5),
The partition plate (8) is formed in a gate shape in cross section, the width thereof is aligned with the flat tube (5), the opening edge in the height direction is seated on the casing bottom lid (3), and A gap corresponding to the protrusion of the tank (1) is formed between the facing surface of the cooling water tank (1), and the gap is formed to be the same as the gap between the tube (5) and the tank (1). An expanded portion (8a) is formed in the height direction at both end edges in the longitudinal direction of (8), and the expanded portion (8a) is fixed in contact with the expanded portion (5c) of the adjacent tube (5). And a heat exchanger in which a cooling water channel (19) is formed between them .

請求項２に記載の本発明は、請求項１において、
前記戻りタンク(9) および前記出入口タンク(12)が前記ケーシング(4)と一体に形成された熱交換器である。 The present invention according to claim 2 is the method according to claim 1 ,
The return tank (9) and the inlet / outlet tank (12) are heat exchangers formed integrally with the casing (4).

本発明の熱交換器は、ケーシング４の一端部に出入口タンク１２が設けられ、その内部にタンク内仕切部12aまたはバイパス弁１３を有するものにおいて、ケーシング４内に仕切プレート８による戻りダクト７を設けることにより、一対の出入口パイプをコアの一方側に近接することができ、部品点数が少なく構造の簡単な熱交換器を安価に提供できる。   In the heat exchanger according to the present invention, an inlet / outlet tank 12 is provided at one end of a casing 4, and a tank internal partition 12 a or a bypass valve 13 is provided therein, and a return duct 7 formed by a partition plate 8 is provided in the casing 4. By providing, a pair of entrance / exit pipes can be brought close to one side of the core, and a heat exchanger with a small number of parts and a simple structure can be provided at low cost.

また、横断面門型の仕切プレート８の長手方向両端部に高さ方向に拡開部８ａを構成し、その拡開部８ａを隣接するチューブ５の拡開部５ｃに接触固定して、それらの間に冷却水路１９を形成したので、戻りダクト７を冷却して低温に維持し、そこを流通する被冷却流体が加熱されることを防止できる。
さらに、門形の仕切プレート(8)の幅が前記偏平なチューブ(5)に整合し、冷却水タンク(1)との隙間が、チューブ(5)とタンク(1)の隙間と同一に形成されたから、仕切プレート(8)に対向するチューブ(5)との隙間に冷却水が充分に流通する。そしてその仕切プレートの天井を冷却して、戻りダクト(7)内の被冷却媒体を冷却することができる。 Further , widening portions 8a are formed in the height direction at both longitudinal ends of the gate-shaped partition plate 8 having a cross section, and the widening portions 8a are fixed in contact with the widening portions 5c of the adjacent tubes 5, Since the cooling water channel 19 is formed in between, the return duct 7 is cooled and maintained at a low temperature, and the fluid to be cooled flowing therethrough can be prevented from being heated.
Further, the width of the gate-shaped partition plate (8) is aligned with the flat tube (5), and the gap between the cooling water tank (1) and the gap between the tube (5) and the tank (1) is formed. As a result, the cooling water sufficiently circulates in the gap with the tube (5) facing the partition plate (8). The ceiling of the partition plate can be cooled to cool the medium to be cooled in the return duct (7).

上記構成において請求項２に記載のように、戻りタンク９および出入口タンク１２をケーシング４と一体に形成した場合には、さらに部品点数が少なくなり熱交換器を安価に提供できる。 When the return tank 9 and the inlet / outlet tank 12 are formed integrally with the casing 4 as described in claim 2 in the above configuration, the number of parts is further reduced, and a heat exchanger can be provided at low cost.

次に図面に基づいて本発明の実施の形態につき説明する。
図１は本発明の熱交換器の要部分解斜視図であり、図２は同組立状態を示す要部斜視図であって、それぞれ出入口タンクを省略したものである。また図３は、図２におけるIII−III線上で切断した本発明の熱交換器の横断面略図である。また図４は同熱交換器に用いられる仕切プレート８の斜視図である。
この熱交換器は、図１および図３に示す如く、ケーシング本体２と、ケーシング底蓋３とによりケーシング４を構成し、その内部に複数のチューブ５の積層体からなるコア６が配置されると共に、仕切プレート８が内装される。そして、そのケーシング４の一端に戻りタンク９が設けられ、他端に出入口タンク１２が配置され、その出入口タンク１２内にバイパス弁１３が配置されている。 Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of the main part of the heat exchanger of the present invention, and FIG. 2 is a perspective view of the main part showing the assembled state, in which the inlet / outlet tank is omitted. FIG. 3 is a schematic cross-sectional view of the heat exchanger of the present invention cut along line III-III in FIG. FIG. 4 is a perspective view of a partition plate 8 used in the heat exchanger.
In this heat exchanger, as shown in FIGS. 1 and 3, a casing 4 is constituted by a casing main body 2 and a casing bottom cover 3, and a core 6 made of a laminate of a plurality of tubes 5 is disposed therein. At the same time, a partition plate 8 is provided. A return tank 9 is provided at one end of the casing 4, an inlet / outlet tank 12 is arranged at the other end, and a bypass valve 13 is arranged in the inlet / outlet tank 12.

ケーシング本体２は金属板のプレス成形体からなり、横断面門型に形成されると共に、その両端部の一側に一対の冷却水タンク１が一体に突設形成されている。ケーシング底蓋３は、そのケーシング本体２の高さ方向の開口を閉塞するものであって、その幅方向両縁に立ち上げ縁３ａが設けられ、その立ち上げ縁３ａにケーシング本体２の開口縁が嵌着固定される。
コア６を構成する複数の偏平なチューブ５は、その長手方向両端部が高さ方向に拡開された矩形の拡開部５ｃを有し、隣接するチューブ５は互いにその拡開部５ｃで接触固定されることにより、それらの外面間に冷却水路１９を形成する。なお、チューブ５内部にはインナーフィン１６が介装されている。 The casing body 2 is formed of a metal plate press-molded body, is formed in a gate shape in cross section, and a pair of cooling water tanks 1 are integrally formed on one side of both ends thereof. The casing bottom lid 3 closes the opening in the height direction of the casing body 2, and rising edges 3 a are provided at both edges in the width direction, and the opening edge of the casing body 2 is provided at the rising edge 3 a. Is fixed.
The plurality of flat tubes 5 constituting the core 6 have rectangular expanded portions 5c whose longitudinal ends are expanded in the height direction, and adjacent tubes 5 are in contact with each other at the expanded portions 5c. By fixing, the cooling water channel 19 is formed between those outer surfaces. An inner fin 16 is interposed inside the tube 5.

次に、仕切プレート８は横断面門型に形成され、その高さ方向の開口縁がケーシング底蓋３に着座される。そして、その仕切プレート８の長手方向の両端縁部には、高さ方向に拡開部８ａが形成され、その拡開部８ａが隣接するチューブ５の拡開部５ｃに接触固定されて、それらの間に冷却水路１９が図３の如く形成される。そして、ケーシング底蓋３上に仕切プレート８およびコア６が載置されると共に、それらをケーシング本体２によって被蔽する。そのケーシング４の一端には戻りダクト９が被嵌されると共に、他端には図３の如く出入口タンク１２が被嵌される。   Next, the partition plate 8 is formed in a cross-sectional gate shape, and the opening edge in the height direction is seated on the casing bottom lid 3. And the expansion part 8a is formed in the height direction in the both-ends edge part of the longitudinal direction of the partition plate 8, The expansion part 8a is contact-fixed to the expansion part 5c of the adjacent tube 5, and these In between, the cooling water channel 19 is formed as shown in FIG. Then, the partition plate 8 and the core 6 are placed on the casing bottom lid 3 and are covered with the casing body 2. A return duct 9 is fitted on one end of the casing 4, and an inlet / outlet tank 12 is fitted on the other end as shown in FIG.

そして、コア６の一側面に突設された一対の冷却水タンク１の各孔に冷却水パイプ１４の一端が嵌着固定される。また、出入口タンク１２の内部にはバイパス弁１３が実線の状態から鎖線の状態に開閉自在に設けられ、その軸部が図示しないバイパス弁駆動装置に連結される。バイパス弁１３のコア６側には入口１０が設けられ、戻りダクト７側には出口１１が設けられる。
そして入口１０および出口１１に夫々高温ガスの出入口パイプが取付けられる。なお、これらの各部品は金属板を用い、各部品間にはろう材が塗布または被覆され、全体が組立てられた状態で高温の炉内で一体にろう付け固定されて、熱交換器を完成する。 Then, one end of the cooling water pipe 14 is fitted and fixed in each hole of the pair of cooling water tanks 1 protruding from one side surface of the core 6. Further, a bypass valve 13 is provided inside the inlet / outlet tank 12 so as to be openable and closable from a solid line state to a chain line state, and a shaft portion thereof is connected to a bypass valve driving device (not shown). An inlet 10 is provided on the core 6 side of the bypass valve 13, and an outlet 11 is provided on the return duct 7 side.
A hot gas inlet / outlet pipe is attached to each of the inlet 10 and the outlet 11. Each of these parts uses metal plates, and a brazing material is applied or coated between the parts, and the whole is assembled and brazed and fixed together in a high-temperature furnace to complete the heat exchanger. To do.

なお、仕切プレート８は、図４に示す如く形成され、その上面側に多数のディンプル１７が一体に突設形成されている。このディンプル１７の高さは、仕切プレート８の両端に突設された拡開部８ａの高さと同一である。このようなディンプル１７はそれぞれチューブ５の外面側にも多数突設され、その高さはチューブ５の拡開部５ｃの高さに等しい。同様にケーシング本体２の天井部内面にも同じ高さのディンプル１７が突設形成されている。そして、隣接する各プレートどうしはその外面側において互いのディンプル１７の頂部が接触し、それらの間が一体にろう付け固定される。   The partition plate 8 is formed as shown in FIG. 4, and a large number of dimples 17 are integrally formed on the upper surface side thereof. The height of the dimple 17 is the same as the height of the expanded portion 8 a protruding from both ends of the partition plate 8. A large number of such dimples 17 project from the outer surface side of the tube 5, and the height thereof is equal to the height of the expanded portion 5 c of the tube 5. Similarly, dimples 17 having the same height are formed on the inner surface of the ceiling portion of the casing body 2 so as to project. The adjacent plates are brought into contact with the tops of the dimples 17 on the outer surface side, and the plates are integrally brazed and fixed.

出入口タンク１２の入口１０から高温ガスがコア６内に供給され、各チューブ５内の排ガス路１８を流通し、戻りタンク９によってＵターンして、仕切プレート８内の戻りダクト７を介して出口１１、出口パイプ１５から外部に導かれる。そして、一対の冷却水タンク１のうち一方から、冷却水パイプ１４を介して冷却水が各チューブ５外周の冷却水路１９に供給され、他方の冷却水タンク１および冷却水パイプ１４からそれが流出し、冷却水２１と高温ガス２０との間に熱交換が行われる。
高温ガス２０の温度が比較的低温の場合には、バイパス弁１３を実線の状態から鎖線の状態に位置させ、戻りダクト７の出口を閉塞すると共に、入口１０，出口１１間を連通して、入口１０から流入した高温ガス２０を直接出口パイプ１５に導く。 Hot gas is supplied into the core 6 from the inlet 10 of the inlet / outlet tank 12, flows through the exhaust gas passage 18 in each tube 5, makes a U-turn by the return tank 9, and exits through the return duct 7 in the partition plate 8. 11. It is led outside from the outlet pipe 15. Then, cooling water is supplied from one of the pair of cooling water tanks 1 to the cooling water channel 19 on the outer periphery of each tube 5 through the cooling water pipe 14, and it flows out from the other cooling water tank 1 and the cooling water pipe 14. Then, heat exchange is performed between the cooling water 21 and the hot gas 20.
When the temperature of the hot gas 20 is relatively low, the bypass valve 13 is positioned from the solid line state to the chain line state, the outlet of the return duct 7 is closed, and the inlet 10 and the outlet 11 are communicated, The hot gas 20 flowing from the inlet 10 is guided directly to the outlet pipe 15.

次に、図５は本発明の他の実施の形態を示す分解斜視図（バイパス弁省略）である。この例が図１のそれと異なる点は、戻りタンク９および出入口タンク１２がケーシング４と一体に形成された点のみである。
すなわち、ケーシング本体２の長手方向一端に戻りタンク９が一体に形成されると共に他端に出入口タンク１２が一体形成されて箱状に形成され、その外周に整合するようにケーシング底蓋３の周縁部が立ち上げられたものである。 Next, FIG. 5 is an exploded perspective view (bypass valve omitted) showing another embodiment of the present invention. This example is different from that of FIG. 1 only in that the return tank 9 and the inlet / outlet tank 12 are formed integrally with the casing 4.
That is, the tank 9 is integrally formed at one end in the longitudinal direction of the casing body 2 and the inlet / outlet tank 12 is integrally formed at the other end to form a box shape. The peripheral edge of the casing bottom lid 3 is aligned with the outer periphery thereof. The department was launched.

次に、図６は本発明のさらに他の実施の形態を示す要部縦断面図であり、図７はそのタンク内仕切部１２ａを有する仕切プレート８の斜視図である。この例は、図３のバイパス弁13の代わりにタンク内仕切部１２ａを仕切プレート８の一端部に延長したものであり、出入口タンク１２の入口１０と出口１１との間を固定的に分離するものである。このようにすることにより、出入口タンク１２の入口１０と出口１１とをコア６の一方側に配置し、それに連結する一対の出入口パイプを近接し、小スペースで取付を容易にするものである。   Next, FIG. 6 is a longitudinal sectional view of an essential part showing still another embodiment of the present invention, and FIG. 7 is a perspective view of a partition plate 8 having a tank partition part 12a. In this example, an in-tank partition 12a is extended to one end of the partition plate 8 instead of the bypass valve 13 in FIG. 3, and the inlet 10 and the outlet 11 of the inlet / outlet tank 12 are fixedly separated. Is. In this way, the inlet 10 and outlet 11 of the inlet / outlet tank 12 are arranged on one side of the core 6, and a pair of inlet / outlet pipes connected to the core 6 are close to each other to facilitate installation in a small space.

本発明の熱交換器の要部分解斜視図。The principal part disassembled perspective view of the heat exchanger of this invention. 同組立状態を示す要部斜視図。The principal part perspective view which shows the assembly state. 図２におけるIII−III矢視断面略図。FIG. 3 is a schematic cross-sectional view taken along arrow III-III in FIG. 2. 同熱交換器に用いる仕切プレート８の斜視図。The perspective view of the partition plate 8 used for the same heat exchanger.

本熱交換器の他の例を示す分解斜視図。The disassembled perspective view which shows the other example of this heat exchanger. 本発明のさらに他の例を示す縦断面略図。The longitudinal cross-sectional schematic diagram which shows the other example of this invention. 同熱交換器に用いる仕切プレート８の斜視図。The perspective view of the partition plate 8 used for the same heat exchanger.

符号の説明Explanation of symbols

１ 冷却水タンク
２ ケーシング本体
３ ケーシング底蓋
３ａ 立ち上げ縁
４ ケーシング
５ チューブ
５ａ プレート
５ｂ プレート
５ｃ 拡開部 DESCRIPTION OF SYMBOLS 1 Cooling water tank 2 Casing main body 3 Casing bottom cover 3a Rising edge 4 Casing 5 Tube 5a Plate 5b Plate 5c Expansion part

６ コア
７ 戻りダクト
８ 仕切プレート
８ａ 拡開部
９ 戻りタンク
１０ 入口
１１ 出口
１２ 出入口タンク 6 Core 7 Return duct 8 Partition plate 8a Expanding part 9 Return tank 10 Inlet 11 Outlet 12 Inlet / outlet tank

１２ａ タンク内仕切部
１３ バイパス弁
１４ 冷却水パイプ
１５ 出口パイプ
１６ インナーフィン
１７ ディンプル
１８ 排ガス路
１９ 冷却水路
２０ 高温ガス
２１ 冷却水 12a Tank partition 13 Bypass valve 14 Cooling water pipe 15 Outlet pipe 16 Inner fin 17 Dimple 18 Exhaust gas path 19 Cooling water path 20 High temperature gas 21 Cooling water

Claims (2)

横断面門形に形成されて、その門形の立ち上がりの側面の長手方向の両端部のみに一対の冷却水タンク(1)が、その側面の全高さに渡って、その外面側へ、一体に突設された細長いケーシング本体(2)および、そのケーシング本体(2)の高さ方向の開口が、その開口に整合する形状を有する幅方向両縁の立ち上げ縁(3a)に嵌着されて閉塞されるケーシング底蓋(3)を有するケーシング(4)と、
そのケーシング(4)に内装され、その幅が、前記水タンク(1)を除く、ケーシング(4)の内幅に整合し、それぞれの内部に被冷却媒体が流通すると共に、外周に冷却水が流通する複数の偏平なチューブ(5)の積層体よりなるコア(6)と、
前記ケーシング(4)内で、前記コア(6)に隣接して、そのコア(6)と前記ケーシング底蓋(3)との間に戻りダクト(7)を形成する仕切プレート(8)と、
前記ケーシング(4)の長手方向の一端部に設けられ、前記コア(6)の出口端と前記戻りダクト(7)の入口端とを一体に被蔽して両者を連通する戻りタンク(9)と、
前記ケーシング(4)の長手方向他端部に設けられ、前記コア(6)の入口端と前記戻りダクト(7)の出口端とを一体に被蔽して両者を連通し、コア(6)側に被冷却媒体の入口(10)が設けられ、戻りダクト側にその出口(11)が設けられた出入口タンク(12)と、
その出入口タンク(12)内に設けられ、被冷却媒体をその入口(10)と出口(11)の間を固定的に閉塞するタンク内仕切部(12a)または、それらの間を開閉自在に閉塞するバイパス弁(13)と、を具備し、
前記偏平なチューブ(5)は、その長手方向両端部が高さ方向に拡開されて矩形に形成され、隣接するチューブ(5)の各拡開部(5c)が互いに接触固定され、その拡開部(5c)を除き、隣接チューブ(5)間に冷却水路(19)が形成され、
前記仕切プレート(8)は横断面門形に形成され、その幅が前記偏平なチューブ(5)に整合し、その高さ方向の開口縁が前記ケーシング底蓋(3)に着座されて、前記冷却水タンク(1)との対向面間に、そのタンク(1)の突出分の隙間が形成され、その隙間はチューブ(5)とタンク(1)の隙間と同一に形成され、その仕切プレート(8)の長手方向両端縁部に、高さ方向に拡開部(8a)が形成され、その拡開部(8a)が隣接するチューブ(5)の拡開部(5c)に接触固定されて、それらの間に冷却水路(19)が形成された熱交換器。 Is formed on the cross-section gantry, the longitudinal pair of cooling water tank only at both end portions of the gate-shaped rising side (1) is, over the entire height of the side surface, to the outer surface side, integrated The projecting elongated casing body (2) and the opening in the height direction of the casing body (2) are fitted to the rising edges (3a) at both edges in the width direction having a shape matching the opening. A casing (4) having a casing bottom lid (3) to be closed;
Inside the casing (4) , the width thereof matches the inner width of the casing (4) excluding the water tank (1), the medium to be cooled circulates inside each, and the cooling water flows around the outer periphery. A core (6) composed of a laminate of a plurality of flat tubes (5) in circulation;
In the casing (4), adjacent to the core (6), a partition plate (8) forming a return duct (7) between the core (6) and the casing bottom lid (3),
A return tank (9) provided at one end in the longitudinal direction of the casing (4) and integrally covering the outlet end of the core (6) and the inlet end of the return duct (7) When,
Provided at the other end in the longitudinal direction of the casing (4), and integrally covers the inlet end of the core (6) and the outlet end of the return duct (7), the core (6) An inlet / outlet tank (12) provided with an inlet (10) for the medium to be cooled on the side and an outlet (11) on the return duct side;
A tank internal partition (12a) that is provided in the inlet / outlet tank (12) and fixedly closes the medium to be cooled between the inlet (10) and the outlet (11), or between them is freely opened and closed. A bypass valve (13) ,
The flat tube (5) is formed in a rectangular shape with its longitudinal end portions widened in the height direction, and the widened portions (5c) of the adjacent tubes (5) are fixed in contact with each other. Except for the opening (5c), a cooling water channel (19) is formed between adjacent tubes (5),
The partition plate (8) is formed in a gate shape in cross section, the width thereof is aligned with the flat tube (5), the opening edge in the height direction is seated on the casing bottom lid (3), and A gap corresponding to the protrusion of the tank (1) is formed between the facing surface of the cooling water tank (1), and the gap is formed to be the same as the gap between the tube (5) and the tank (1). An expanded portion (8a) is formed in the height direction at both end edges in the longitudinal direction of (8), and the expanded portion (8a) is fixed in contact with the expanded portion (5c) of the adjacent tube (5). And a heat exchanger in which a cooling water channel (19) is formed between them . 請求項１において、
前記戻りタンク(9)および前記出入口タンク(12)が前記ケーシング(4)と一体に形成された熱交換器。 In claim 1 ,
A heat exchanger in which the return tank (9) and the inlet / outlet tank (12) are integrally formed with the casing (4).
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